Wall mounted solder spool holder

This wall mounted spool holder let's you solder easily without taking up space on your workbench. 

The spools used here are 250g, here are their dimensions: 

The Outside diameter of the shaft that the spools spin on is 19mm, and the distance between the two shafts is ~80mm, so you can fit some bigger spools on it.

I've designed a double, and a single spool version in case someone doesn't need two.
 

The spools are secured by a pin with a knurled handle for ease of use, and a left handed thread, so that it doesn't get untwisted by the spool when in use.

You can mount it so that the solder comes out of the right side by simply securing the holder upside down.

Since the threads on the pin and holder are quite big (M10x1.5) your printer shouldn't struggle too much with them. A 0.2mm layer height should work easly.